115331144 has 16 divisors (see below), whose sum is σ = 223703100. Its totient is φ = 55676992.

The previous prime is 115331143. The next prime is 115331171. The reversal of 115331144 is 441133511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100600900 + 14730244 = 10030^2 + 3838^2 .

It is not an unprimeable number, because it can be changed into a prime (115331143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248327 + ... + 248790.

Almost surely, 2^115331144 is an apocalyptic number.

It is an amenable number.

115331144 is a deficient number, since it is larger than the sum of its proper divisors (108371956).

115331144 is a wasteful number, since it uses less digits than its factorization.

115331144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497152 (or 497148 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 115331144 is about 10739.2338646665. The cubic root of 115331144 is about 486.7607295092.

Adding to 115331144 its reverse (441133511), we get a palindrome (556464655).

The spelling of 115331144 in words is "one hundred fifteen million, three hundred thirty-one thousand, one hundred forty-four".